Belgian authorities are investigating reports of a booze-fueled orgy allegedly involving some 10 soldiers and police officers at a police station during last month’s terror lockdown.

Belgian troops were deployed in the capital city of Brussels in the wake of the November 13 Islamist terror attacks in neighboring France. At least three of the nine men suspected of carrying out the Paris attacks, which killed 130 people, were based in Brussels and authorities there fearing copycat attacks closed government offices, shopping centers and markets, the public transit system, and schools. Soldiers patrolled the streets by day and bivouacked by night at a police station in Ganshoren.

Leading local media report two policewomen were invited upstairs to the soldiers’ quarters after operating hours sometime between November 21 and November 26, a period in which the nation was on its highest terrorism alert level. According toLa Dernière Heure, several officers from the Ganshoren station told some of the 20 soldiers quartered upstairs there that their female colleagues were “all hot and all crazy” to have sex with the troops.

An orgy involving eight soldiers and two female police officers allegedly ensued and continued until the senior officer at the station discovered the carnal scene. La Librereports

Western Police Zone commander Johan De Becker has launched an internal investigation of the incident.

“The military have actually slept in the police station for two weeks,” De Becker explained. “A stage was built to accommodate them. When they left, they organized a small party to thank the police in the area. We have launched an investigation to find out what exactly happened.”

A witness who was present at the alleged bacchanalia has already been interviewed by investigators.

A military spokesperson said the Chasseurs Ardennais, or Ardennes Hunters—the unit to which the accused soldiers belong—is also investigating the alleged romp, but added that there is no rule against consenting adults engaging in such behavior on their free time.

“This is not a disciplinary investigation,” said Olivier Severin. “We are looking rather, for now, to learn more about what really happened. If the facts did occur, it will determine if all participants were willing. So far, no complaint has been reported to us. outside their hours of service, the soldiers are free to do what they want in a private place.”